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On absolute, perfect, and unconditional convergences of double series in Banach spaces

We prove that, in the case of double series, perfect and unconditional convergences coincide, while absolute and perfect convergences do not coincide even for numerical series.

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Bibliographic Details
Date:	1997
Main Authors:	Kadets, M. I., Кадец, M. И.
Format:	Article
Language:	Russian English
Published:	Institute of Mathematics, NAS of Ukraine 1997
Online Access:	https://umj.imath.kiev.ua/index.php/umj/article/view/5098
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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